Sigma rule: Ursnif Redirection Of Discovery Commands

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-53841b241ae6, updated 2023-07-16T00:00:00.000Z.

Rule

Title
Ursnif Redirection Of Discovery Commands
Status
test
Level
high
Author
@kostastsale
Date
2023-07-16
File
rules-emerging-threats/2023/Malware/Ursnif/proc_creation_win_malware_ursnif_cmd_redirection.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the redirection of Ursnif discovery commands as part of the initial execution of the malware.

Log source

product
windows
category
process_creation

Detection

selection:
    ParentImage|endswith: '\explorer.exe'
    Image|endswith: '\cmd.exe'
    CommandLine|contains|all:
        - '/C '
        - ' >> *\AppData\local\temp\*.bin'
condition: selection

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.execution
  • attack.t1059
  • detection.emerging-threats

MITRE ATT&CK ids this rule names

References

  • Internal Research

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Malware/Ursnif/proc_creation_win_malware_ursnif_cmd_redirection.yml

Sources and licences

  • SigmaHQ

    "Ursnif Redirection Of Discovery Commands" by @kostastsale (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Malware/Ursnif/proc_creation_win_malware_ursnif_cmd_redirection.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Ursnif Redirection Of Discovery Commands",
entity page, dataset version ref-53841b241ae6, updated 2023-07-16T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/7aaa5739-12fc-41aa-b98b-23ec27d42bdf (accessed 2026-11-03).
Underlying source: SigmaHQ rule 7aaa5739-12fc-41aa-b98b-23ec27d42bdf, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.